Container forming mechanism



May 14, 1940. M HERES 2,200,360

CONTAINER FORMING MECHANISM Filed March 17. 1939 2 Sheets-Sheet 1 INVENTOR MARTIN HERES BY 150M Ti h ATTORNEYS 1940- M. HERES .200.360

connmm FORMING mmcmuusu Filed March 17, 1939 2 Sheets-Sheet 2' H," "w ll I INVENTOR MARTIN HERES BY ATTORNEY Patented May 14, 1940 i H 2,200,360 CONTAINER romaine MECHANISM Martin Heres, Elnihurst, N. Y., assignor to Eppens, Smith Company, 1110., New York, N. Y., a corporation of New Jersey Application March 1'7, 1939, Serial No. 262,352

' I Y 7 Claims. (o1. 93 g) In a generic sense this inventionrelates to forming die or supporting plate, the plunger or the packaging of materialsand morepartioulardepressing element and the bag-forming openly concerns an improved method and apparatus ing, together with the manner of forming the for packaging any commoditywhich may be decontainer from the blank of bag material, it is sirable to put up in predetermined quantities. not deemed necessary to illustrate and describe 5 More especially, the invention has to do with the complete packaging machinery. Only those packaging of the commodity, tea, and in contra- 'parts as are required for a complete'understanddistinction to the conventional gauze fabric, ingot the invention are shown. paper, which is characterized by appropriate Referring more particularly to the drawings, 5 qualifications, is employed. Paper suitable for is the supporting plate designed to receive a blank 10 this purpose must be economical, light, somewhat of paper 8, shown in dotted lines in Fig. 2. This flimsy, and at the same time tough and possess paper is :fed from roll 1' which passes over-tension a relative degree of density. Of these prerequiroll 8, and between a pair of superimposed rolls sites, that of density of the stock plays an 9 and Hi. It issevered by the'knife H and 'preespecially important part. The minute inter- 'sente'd upon the, plate 5 as a square blank with '15 stices of the paper should preclude seeping four corners i2; through of the extremely fine sediment or dust 3 is the hopper through which the commodity which is present inall tea bags, but care must tea is fed in any suitable manner. Depending be exercised that the complete bag almost tofrom, and preferably an' integral part of the tally devoid of undue overlapping of large folds, hopper is tubular plunger it. This is-uniformly otherwise, owing to the presence of the very stock corrugated or fluted exteriorly and longitudesigned to occlude passage of the tea-dust or dinally, as at 95. Directly in the path of the sediment, a series objection ensues-infusion is plunger, plate 5 is provided with a substantially impeded. circular opening or forming die it, the inner wall 5 Besides forming a bag which meets the foreof which is mutilated, that is to say, the inner g going requirements, I have also provided for wall has pairs of projections li in close proximity the elimination of what is known as an open to each other with a relatively small recess l8 bag. as well as, reduced to a minimum the intermediate each pair of projections,- and a likelihood of any clogging of the machinery, due larger recess I9 between the respective pairs of to protruding bag ends of excessive length. Then, projections-the projections and. recessesv being 30 too, I have devised a novel means for mainequidistantly spaced, symmetrically arranged, taining. the bag-forming blanks level as they and in cross section as best seen in Fig. 3, someare fed to the forming die, what simulates a quatreioil. It will be also This application is a continuation in part of noted, particularly in Fig. 2, that the large reapplicants copending application No. 229,061 for cesses are aligned with corners l2 of the bag 35 a container forming mechanism, filed September forming blank 6, or the points which are fur- Y 9, 1938. thest away from the center of the blank and In the drawings, Fig. l is an elevation of the between which the area of paper is greatest. So essential parts of a conventional type of packagas the plunger depresses the blank-through open- 40 ing machinery illustrating an adaptation of the ingifi, the excess paper invariably passes through 40 invention. f large recesses Hi, while the intermediate shorter Fig. 2 is a perspective view of the supporting portions of the blank are simultaneously conplate and the lower extremity of the plunger, the strained between the pairs of projections l1 and bagiorming blank being shown in dotted lines. companion recesses 53, and due also to the com- Fig. 3 is a top plan view of the supporting plate, b-ined effect of corrugations l5 of the plunger 45 plunger and blank, the plunger being in transwhich are complemental with respect to the said verse section. projections and recessesthe bag emerges be- 4 is an larged View of the hopper, plunglow plate 5 with a minimum of narrow folds 2!), er and grip-ping devices assembly. and evenly disposed bag ends 2|, ready to be Fig. 5 is detail elevation of the lower ex- 7 bunched by the gripping jaws 22 and23.

tremity of the plunger, supporting plate and By virtue of the narrow expansible folds, and gripping devices, the latter being shown in the reduction of overlapping of the folds, boiling position of closing the bag, and. water is enabled to instantly penetrate the bag Fig. 6 is a perspective view of the complete bag. and produce an accelerated brewing of the tea. Because the present invention relates to the Also, the infusion is free from dust, or the like To insure guiding of the bag-forming blank in its travel, I preferably mount an annular collar 24 on the bottom of plate 5.

The paper used is light and flimsy, and when the supply on the feed roll 1 is low, it has a tendency to curl. Or a sudden gust of wind may blow a blank from plate 5. These contingencies are avoided by mounting on the plate a pair of lateral, inclined flanges 25 which serve to keep the blanks level and flat against the plate.

I claim:

1. In a bag-forming and filling machine, in combination, a forming die having an opening with a mutilated edge, a plunger with a uniformly corrugated exterior and movable to force a bagforming blank through said opening and present a bag with relatively narrow folds, and gripping members beneath said die and opening designed to-engage the folds at the mouth of the bag and effect a bunch thereof.

2. In a bag-forming and filling machine, in combination, a forming die having an opening with an irregularly notched edge, a plunger with a uniformly corrugated exterior and movable to force a bag-forming blank through said opening and present a bag with relatively narrow folds, and gripping members beneath said die and opening designed to engage the folds at the mouth .of the bag and effect a bunch thereof.

3. In a bag-forming and filling machine, in combination, a forming die having an opening with a mutilated edge, a guide depending from said die in line with the opening therein, a plunger with a uniformlycorrugated exterior and movable to force a bag-forming blank through said opening and present a bag with relatively narrow folds, and gripping members beneath said die and opening designed to engage the folds at the mouth of the bag and effect a bunch thereof.

4. In a bag-forming and filling machine, in combination, a supporting member including a forming die, a pair of inclined flanges carried by said member for'maintaining a bag-forming blank substantially flat, the space between the flanges and the member being greater at the blank-receiving ends, a plunger movable to depress a blank through said opening, means for introducing loose material to within the bag, and means for closing the mouth of the bag.

5. In a bag-forming and filling machine, in combination, a supporting member including a forming die, a pair of edge guides carried by said member and having inclined overhanging flanges for maintaining a bag-forming blank substantially, flat, a plunger movable to depress a blank through said opening, means for introducing loose material to -within the bag, and means for closing the mouth of the bag.

6. In a bag-forming and filling machine, in combination, a supporting member including a forming die having an opening, the edge of which is formed with relatively large and small notches, the small notches being between the large notches, a plunger with a corrugated exterior and movable to depress a blank through said opening, means for introducing loose material to within the bag, and means for closing the mouth of the bag.

'7. In a bag-forming and filling machine, in combination, a supporting member including a forming die having an opening, the edge of which is formed with large notches and intermediate small notches, said large notches designed to be alined with the corners of a bag-forming blank, a corrugated plunger movable to force the blank through said opening and present a bag with narrow folds, and gripping members beneath said die and opening designed to engage the folds at the mouth of the bag and effect a bunch thereof.

MARTIN HERES. 

